Re: [PATCH v1] gpiolib: Respect error code of ->get_direction()

[Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>]

On Mon, 2018-07-09 at 21:41 +0300, Andy Shevchenko wrote:
> On Mon, 2018-07-09 at 15:13 +0200, Linus Walleij wrote:
> > 

> > 
> > Did you look around to see if some driver might be returning
> > error codes from get_direction()? I suspect mostly I2C-based
> > expanders and if it's an error it's an error and this is the right
> > thing to 
> > do but you never know what people are doing...
> 
> In the GPIO/pinctrl folders: both tegras, bcm2835, stm32 and most of
> Intel.
> 
> In the drivers: i2c-mux-ltc4306.
> 
> So, not many.

Okay, those are returning error codes explicitly, I missed the ones
which returns inherited error code.

So, there are plenty of such, most like you noticed are GPIO expanders.

-- 
Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Intel Finland Oy
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